/Engine/Source/Editor/UnrealEd/Public/WidgetModeManager.h
In all other cases (Tick, FocusLost, etc), the default editor mode tool behavior is used and sufficient.
class FWidgetModeManager : public [FEditorModeTools](API\Editor\UnrealEd\FEditorModeTools)
UWidgetToolsCon...
CachedWidgetToolContext
TWeakPtr<SWidg...
ManagedWidget
Managed widget is forwarded to tool builders / tools to interact with the widget they are operating on
TWeakPtr<ITool...
OwningToolkit
Toolkit owning the widget of interest